This is a set of 24 QR code task cards aligned to the second grade common core standards:
Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction
Mentally add 10 or 100 to a given number 100-900, and mentally subtract 10 or 100 from a given number 100-900.
Students will add and subtract multiples of one hundred from three digit numbers.
QR codes are included on each card so that students can check their work.
*2 versions of the task cards are included: one with QR codes, and one without
Ideas for using task cards in your classroom:
-write the room
-early finisher choice
-cooperative learning activity
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